National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

20°F

-7°C

Humidity 68%
Wind Speed Calm
Barometer 30.64 in (1037.9 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 3 Mar 7:56 am EST
Extended Forecast for

South Dennis MA

  • Today

    Today: A slight chance of snow before noon, then a chance of rain and snow between noon and 2pm, then rain after 2pm. High near 36. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 36 °F

    Slight Chance
    Snow then
    Rain/Snow

  • Tonight

    Tonight: Rain, mainly before 3am. Patchy fog after 10pm. Low around 33. Southeast wind 7 to 13 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 33 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 47. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 47 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday

    Thursday: A chance of rain, mainly after 9am. Mostly cloudy, with a high near 41. Calm wind becoming northeast around 6 mph. Chance of precipitation is 30%.

    High: 41 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 1am. Low around 33. Northeast wind 3 to 7 mph. Chance of precipitation is 80%.

    Low: 33 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain likely, mainly before 1pm. Cloudy, with a high near 41. Northeast wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 41 °F

    Rain Likely

  • Friday Night

    Friday Night: Cloudy, with a low around 32. Northeast wind around 6 mph becoming calm in the evening.

    Low: 32 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 46. Light and variable wind becoming southwest 5 to 9 mph in the morning.

    High: 46 °F

    Mostly Cloudy

Detailed Forecast

Today
A slight chance of snow before noon, then a chance of rain and snow between noon and 2pm, then rain after 2pm. High near 36. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tonight
Rain, mainly before 3am. Patchy fog after 10pm. Low around 33. Southeast wind 7 to 13 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 47. Northwest wind 6 to 8 mph becoming south in the afternoon.
Wednesday Night
Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 30. Calm wind.
Thursday
A chance of rain, mainly after 9am. Mostly cloudy, with a high near 41. Calm wind becoming northeast around 6 mph. Chance of precipitation is 30%.
Thursday Night
Rain, mainly after 1am. Low around 33. Northeast wind 3 to 7 mph. Chance of precipitation is 80%.
Friday
Rain likely, mainly before 1pm. Cloudy, with a high near 41. Northeast wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday Night
Cloudy, with a low around 32. Northeast wind around 6 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 46. Light and variable wind becoming southwest 5 to 9 mph in the morning.
Saturday Night
A chance of rain after 8pm. Cloudy, with a low around 38. Southwest wind around 8 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Sunday
A chance of rain. Mostly cloudy, with a high near 49. West wind 5 to 8 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 37. Southwest wind 3 to 5 mph.
Monday
Partly sunny, with a high near 49. Southwest wind 5 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
8:22 am EST Mar 3, 2026
Forecast Valid:
8am EST Mar 3, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation